Whooping in Clay County, Texas

So I am an avid hunter and I used to hunt the Corps of Engineers land on the Texas side of the Red River. I was going to get my trail camera and check the pictures for any sign of wild hogs moving along the river and eating at the bait I had set up. When I pulled up to the parking area, I was the only truck there. It’s hot in the summer and in those woods there is little breeze. It’s about a 20 min walk through the woods to the camera. So I had navigated my way through the brush and had come around the old piece of original bridge supports and turned slightly north west and something yelled at me about 100 yards away, through the woods. It’s hard to describe the noise. It didn’t taper off, just a blast. I froze, and I don’t know why, but my instinct was to “whoop” at it. I “whooped” and it remained frozen too. I knew where it was but I couldn’t see it through the trees. I raised my rifle to locate whatever it was through the scope. I systematically started searching, and all of a sudden, it tore off through the woods. I saw a glimpse of it through the scope as it took off. What I saw is difficult to explain but you know how a skiers legs look them they are crouched, it was like that, like a spring compressing the knees to unleash power. The sun shone through the trees and I could see the legs had reddish brown fur but was shaggier than a deer. Almost like course hog hair but was soft. Everything about this makes me want to say it was a deer. The fur color, the legs bent, I would even entertain a deer having shaggier fur. But the yell is what makes me know it was something else. It’s yell was intimidating and demanding. It knew I was there and was letting me know it was there. After it ran off, I was filled with a sense of dread and had to talk myself out of not going back to the truck and leaving the camera.